سال انتشار: ۱۳۸۷
محل انتشار: اولین کنگره بین المللی مدیریت بهداشتی و بیماریهای آبزیان
تعداد صفحات: ۱
M Soltani – Departnment of aquatic animal health, faculty of veterinary medicine, university of Tehran, Tehran, Iran
N Torabzadeh – Department of fisheries, Research and Sciences Unit of Islamic Azad university, Tehran, Iran
A Soltani – Faculty of agriculture, university of Tehran, Tehran, Iran
H Ahari – Research Group of Nanonasb Pars, Tehran, Iran.
Method & Materials: Rainbow trout weighing 1.05 g obtained from a fish farm were used. The bioassay test was undertaken at static water condition and water quality parameters including temperature 16◦C, pH 7.5-7.8, hardness <200 mg/l, nitrite <0.1 mg/l, ammonia <0.01 mg/l dissolved oxygen >8 mg/l and carbon dioxide < 5mg/l. The LC50, 96 hours was determined after the survival test and thelimited killing concentration test.
Results & Conclusion: The obtained results showed that the LC50 of nanosilver suspension was zero, 6.9, 6.1, and 4.8 mg/l after 24, 48, 72 and 96 hours exposure, respectively. Clinically, the affected fish showed some aggression behaviors and then become listness followed by darkening of body, exophthalmia and with the final in death. According to the LC50 toxicity this nanosilver suspension can be categorized as a moderate toxicant for rainbow trout.